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TPS548B22

ACTIVE

1.5-V to 18-V, 25-A synchronous SWIFT™ buck converter with differential remote sense

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Data sheet

TPS548B22

ACTIVE
Data sheet Order now

Product details

Vin (Min) (V) 1.5 Vin (Max) (V) 18 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 25 Iq (Typ) (uA) 2000 Switching frequency (Min) (kHz) 425 Switching frequency (Max) (kHz) 1050 Features Adjustable Current Limit, Enable, Light Load Efficiency, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Adjustable, Differential Remote Sense, Forced PWM, Over Current Protection, Soft Start Adjustable Rating Catalog Regulated outputs (#) 1 Control mode D-CAP3 Duty cycle (Max) (%) 80
Vin (Min) (V) 1.5 Vin (Max) (V) 18 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 25 Iq (Typ) (uA) 2000 Switching frequency (Min) (kHz) 425 Switching frequency (Max) (kHz) 1050 Features Adjustable Current Limit, Enable, Light Load Efficiency, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Adjustable, Differential Remote Sense, Forced PWM, Over Current Protection, Soft Start Adjustable Rating Catalog Regulated outputs (#) 1 Control mode D-CAP3 Duty cycle (Max) (%) 80
LQFN-CLIP (RVF) 40 35 mm² 7 x 5
  • Conversion Input Voltage Range (PVIN): 1.5 V to 18 V
  • Input Bias Voltage (VDD) Range: 4.5 V to 22 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated, 4.1-mΩ and 1.9-mΩ Power MOSFETs With 25-A Continuous Output Current
  • Voltage Reference 0.6 V to 1.2 V in 50-mV Steps Using VSEL Pin
  • ±0.5%, 0.9-VREF Tolerance Range: –40°C to +125°C Junction Temperature
  • True Differential Remote Sense Amplifier
  • D-CAP3™ Control Loop to Support Large Bulk Capacitors and/or Small MLCCs Without External Compensation
  • Adaptive On-Time Control With 4 Selectable Frequency Settings: 425 kHz, 650 kHz, 875 kHz and 1.05 MHz
  • Temperature Compensated and with Programmable Positive and Negative Current Limit and OC Clamp
  • Choice of Hiccup or Latch-Off OVP or UVP
  • VDD UVLO External Adjustment by Precision EN Hysteresis
  • Prebias Start-up Support
  • Eco-Mode and FCCM Selectable
  • Full Suite of Fault Protection and PGOOD
  • 7 mm × 5 mm × 1.5 mm, 40-Pin, Stack Clipped LQFN-CLIP Package
  • Conversion Input Voltage Range (PVIN): 1.5 V to 18 V
  • Input Bias Voltage (VDD) Range: 4.5 V to 22 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated, 4.1-mΩ and 1.9-mΩ Power MOSFETs With 25-A Continuous Output Current
  • Voltage Reference 0.6 V to 1.2 V in 50-mV Steps Using VSEL Pin
  • ±0.5%, 0.9-VREF Tolerance Range: –40°C to +125°C Junction Temperature
  • True Differential Remote Sense Amplifier
  • D-CAP3™ Control Loop to Support Large Bulk Capacitors and/or Small MLCCs Without External Compensation
  • Adaptive On-Time Control With 4 Selectable Frequency Settings: 425 kHz, 650 kHz, 875 kHz and 1.05 MHz
  • Temperature Compensated and with Programmable Positive and Negative Current Limit and OC Clamp
  • Choice of Hiccup or Latch-Off OVP or UVP
  • VDD UVLO External Adjustment by Precision EN Hysteresis
  • Prebias Start-up Support
  • Eco-Mode and FCCM Selectable
  • Full Suite of Fault Protection and PGOOD
  • 7 mm × 5 mm × 1.5 mm, 40-Pin, Stack Clipped LQFN-CLIP Package

The TPS548B22 device is a compact single buck converter with adaptive on-time, D-CAP3 mode control. It is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count, and space-conscious power systems.

This device features full differential sense, TI integrated FETs with a high-side on-resistance of 4.1 mΩ and a low-side on-resistance of 1.9 mΩ. The device also features accurate 0.5%, 0.9-V reference with an ambient temperature range between –40°C and +125°C. Competitive features include: very low external component count, accurate load regulation and line regulation, output voltage setpoint accuracy, auto-skip or FCCM mode operation, and internal soft-start control.

The TPS548B22 device is available in 7 mm × 5 mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).

The TPS548B22 device is a compact single buck converter with adaptive on-time, D-CAP3 mode control. It is designed for high accuracy, high efficiency, fast transient response, ease-of-use, low external component count, and space-conscious power systems.

This device features full differential sense, TI integrated FETs with a high-side on-resistance of 4.1 mΩ and a low-side on-resistance of 1.9 mΩ. The device also features accurate 0.5%, 0.9-V reference with an ambient temperature range between –40°C and +125°C. Competitive features include: very low external component count, accurate load regulation and line regulation, output voltage setpoint accuracy, auto-skip or FCCM mode operation, and internal soft-start control.

The TPS548B22 device is available in 7 mm × 5 mm, 40-pin, LQFN-CLIP (RVF) package (RoHs exempt).
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Technical documentation

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Type Title Date
* Data sheet TPS548B22 1.5-V to 18-V VIN, 4.5-V to 22-V VDD, 25-A SWIFT™ Synchronous Step-Down Converter With Full Differential Sense datasheet (Rev. A) PDF | HTML 07 Jul 2017
EVM User's guide TPS548B22 SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 16 Aug 2021
Application note Measuring the Bode Plot for D-CAPx DC/DC Converters PDF | HTML 25 May 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
White paper Power solution options for data center applications (Rev. A) 27 Feb 2020
Application note Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) PDF | HTML 08 Jan 2020
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Application note Using DC/DC Controllers to Improve Bitcoin Miner Designs 15 Mar 2018
Technical article Powering FPGAs - What to consider with Xilinx UltraScale+ FPGAs 29 Jan 2018
Technical article Comparing Bode plots in D-CAP3™ control mode 24 May 2017
Application note Calculating Output Capacitance to Meet Transient and Ripple Requirements 02 May 2017
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev 25 Jan 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS548B22EVM-847 — TPS548B22 DCAP3 High Performance, 25A Single Synchronous Step-Down Converter Evaluation Module

The TPS548B22EVM-PWR784 evaluation module (EVM) uses the TPS548B22. The TPS548B22 is a D-CAP3™ mode, 25A synchronous Buck converter with integrated MOSFETs. It provides a fixed 1.0V output at up to 25A from a 12V input bus.
User guide: PDF | HTML
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Simulation model

TPS548B22 PSpice Transient Model

SLUM577.ZIP (154 KB) - PSpice Model
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Simulation model

TPS548B22 SIMPLIS Transient Model

SLUM746.ZIP (488 KB) - SIMPLIS Model
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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